```markdown

Delta and Amex Announce New Bonuses for SkyMiles Business Credit Cards: Implications for Financial Markets

In a strategic move aimed at enhancing customer loyalty and attracting new clients, Delta Air Lines (DAL) and American Express (AXP) have announced new bonuses for their SkyMiles business credit cards. This development is noteworthy as it reflects the ongoing competition in the travel and financial services sectors, especially in the wake of a recovering post-pandemic economy. Let’s analyze the potential short-term and long-term impacts of this news on the financial markets.

Short-Term Impacts

1. Increased Consumer Spending: The introduction of new bonuses could incentivize businesses to apply for these credit cards, leading to increased consumer spending on travel and related services. This uptick in spending may positively affect Delta's stock price as well as American Express's.

2. Stock Price Reactions:

• Delta Air Lines (DAL): The stock may see a short-term rally as investors respond positively to increased customer acquisition strategies.
• American Express (AXP): Similar reactions can be expected for AXP, with potential bullish sentiment driving the stock higher.

3. Market Indices: The Dow Jones Industrial Average (DJIA) and S&P 500 (SPX) could also see upward movements if these companies perform well, as they are major components of these indices.

Long-Term Impacts

1. Brand Loyalty and Retention: The new bonuses may strengthen brand loyalty among existing customers and attract new business clients. This can lead to a more stable revenue stream for Delta and Amex in the long term.

2. Competitive Advantage: By enhancing their offerings, both companies may gain a competitive edge over rivals like United Airlines (UAL) and Chase Bank in the travel and credit card market. This could lead to sustained growth in market share and profitability.

3. Historical Context: Similar strategies have been employed in the past, such as in February 2021 when American Express announced enhanced rewards for its travel-related cards amid a recovering travel environment. Following that announcement, AXP saw a significant price increase of approximately 10% over the following month, reflecting positive investor sentiment.

Potentially Affected Indices and Stocks

• Indices:
• Dow Jones Industrial Average (DJIA)
• S&P 500 Index (SPX)
• Stocks:
• Delta Air Lines Inc. (DAL)
• American Express Company (AXP)
• United Airlines Holdings Inc. (UAL)
• Other financial service providers like JPMorgan Chase & Co. (JPM)

Conclusion

The announcement of new bonuses for the SkyMiles business credit cards by Delta and American Express is poised to have significant short-term and long-term effects on the financial markets. While the immediate focus will be on stock price fluctuations and consumer spending, the broader implications for brand loyalty and market competition should not be overlooked. Investors should keep an eye on DAL and AXP as well as the broader travel and financial sectors to gauge how this news unfolds in the upcoming quarters.

```